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CC381H Copper-nickel vs. C21000 Brass

Both CC381H copper-nickel and C21000 brass are copper alloys. They have 67% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is CC381H copper-nickel and the bottom bar is C21000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
110
Elongation at Break, % 20
2.9 to 50
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 52
43
Tensile Strength: Ultimate (UTS), MPa 380
240 to 450
Tensile Strength: Yield (Proof), MPa 140
69 to 440

Thermal Properties

Latent Heat of Fusion, J/g 240
200
Maximum Temperature: Mechanical, °C 260
190
Melting Completion (Liquidus), °C 1180
1070
Melting Onset (Solidus), °C 1120
1050
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 30
230
Thermal Expansion, µm/m-K 16
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.8
56
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
57

Otherwise Unclassified Properties

Base Metal Price, % relative 40
30
Density, g/cm3 8.9
8.8
Embodied Carbon, kg CO2/kg material 5.0
2.6
Embodied Energy, MJ/kg 73
42
Embodied Water, L/kg 280
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 60
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 68
21 to 830
Stiffness to Weight: Axial, points 8.6
7.2
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 12
7.4 to 14
Strength to Weight: Bending, points 13
9.6 to 15
Thermal Diffusivity, mm2/s 8.4
69
Thermal Shock Resistance, points 13
8.1 to 15

Alloy Composition


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Aluminum (Al), % 0 to 0.010
0
Carbon (C), % 0 to 0.030
0
Copper (Cu), % 64.5 to 69.9
94 to 96
Iron (Fe), % 0.5 to 1.5
0 to 0.050
Lead (Pb), % 0 to 0.030
0 to 0.030
Manganese (Mn), % 0.6 to 1.2
0
Nickel (Ni), % 29 to 31
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0 to 0.5
3.7 to 6.0
Residuals, % 0
0 to 0.2